"It's not his," Ross told reporters while flanked by Campbell and the couple's legal adviser, Oakland attorney John Burris. "We buy his clothes. We know what he wears, so that was not his shirt. The sock was not his, either."
...
Before the
couple's arrival at the scene, searchers girded for the possibility that the clothing belonged to Hasanni.
Read more: http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2009/09/13/BABK19MOGP.DTL&tsp=1#ixzz0R2eRmyOK
I never saw it mentioned what color/kind of socks Hasanni was wearing or what his shoes looked like.
And this from same article makes me think that sweatshirt picture posted in this thread could not be what they found or the photo angle is distorted somehow.
"Because it is similar, it's gray,
it does appear to be small, we want to make sure - this is pretty close to the area where he was missing - we want to make sure that we analyze it and confirm," Oakland police Sgt. Arturo Bautista told reporters.